What is the lowest angle allowed with a non-shouldered eyebolt?

The lowest angle allowed with a non-shouldered eyebolt is considered to be 0 degrees, as this situates the load directly in line with the axis of the eyebolt. A non-shouldered eyebolt is designed to handle loads applied in a direct vertical line without any angular deviation. This means that when the load is aligned perfectly, the shear forces on the eyebolt are minimized, thus ensuring safety and integrity during lifting operations.

When load angles deviate from this ideal alignment, especially in the case of non-shouldered eyebolts, the resulting forces can increase dramatically, potentially exceeding the rated capacity of the hardware and leading to failure. Hence, adherence to using non-shouldered eyebolts strictly in vertical applications or at 0 degrees is crucial for safe rigging practices.